Key Facts

Overview

Comet D/1770 L1 (Lexell) is an object whose orbit features a relatively short period, low inclination, and is controlled by Jupiter's gravitational effects. NASA JPL has classified Lexell as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

Lexell orbits the sun every 2,050 days (5.61 years), coming as close as 0.67 AU and reaching as far as 5.63 AU from the sun. Its orbit is highly elliptical.

No Close Approaches

Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.

Images and Observations

Lexell's orbit is determined by observations dating back to June 15, 1770. It was last officially observed on Oct. 3, 1770. The IAU Minor Planet Center records 130 observations used to determine its orbit.

Accessibility and Exploration

This comet is not considered a viable target for human exploration by the NHATS study.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of Lexell:

References

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Orbital Elements

  • Epoch: 2367764.5 JD
  • Semi-major axis: 3.153 AU
  • Eccentricity: 0.7861
  • Inclination: 1.55°
  • Longitude of Ascending Node: 134.47°
  • Argument of Periapsis: 225.02°
  • Mean Anomaly: -0.01°

Physical Characteristics

Derived Characteristics

  • Orbit Period: 2,050 days (5.61 years)
  • Avg. Orbit Speed: 16.73 km/s
  • Aphelion Distance: 5.63 AU
  • Perihelion Distance: 0.67 AU

Orbit Simulation

Sky Map

The position of D/1770 L1 (Lexell) is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.